зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
2.8 KiB
C++
72 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef _ChngNtfy_H_
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#define _ChngNtfy_H_
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#include "ptrarray.h"
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class ChangeListener;
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class MessageDBView;
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class ChangeAnnouncer : public XPPtrArray // array of ChangeListeners
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{
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public:
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ChangeAnnouncer();
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virtual ~ChangeAnnouncer();
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virtual XP_Bool AddListener(ChangeListener *listener);
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virtual XP_Bool RemoveListener(ChangeListener *listener);
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// convenience routines to notify all our ChangeListeners
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void NotifyViewChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
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MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
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void NotifyViewStartChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
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MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
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void NotifyViewEndChangeAll(MSG_ViewIndex startIndex, int32 numChanged,
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MSG_NOTIFY_CODE changeType, ChangeListener *instigator);
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void NotifyKeyChangeAll(MessageKey keyChanged, int32 flags,
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ChangeListener *instigator);
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void NotifyAnnouncerGoingAway(ChangeAnnouncer *instigator);
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void NotifyAnnouncerChangingView(ChangeAnnouncer *instigator, MessageDBView *newView);
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};
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class ChangeListener
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{
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public:
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ChangeListener();
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virtual ~ChangeListener();
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// do nothing notification routines - subclass to do something.
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// New notification routines need to be added here as do nothing routines
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virtual void OnViewChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
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MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/);
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virtual void OnViewStartChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
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MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) ;
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virtual void OnViewEndChange(MSG_ViewIndex /*startInd*/, int32 /*numChanged*/,
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MSG_NOTIFY_CODE /* changeType */, ChangeListener * /*instigator*/) ;
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virtual void OnKeyChange(MessageKey /*keyChanged*/, int32 /*flags*/,
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ChangeListener * /*instigator*/) ;
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virtual void OnAnnouncerGoingAway(ChangeAnnouncer * /*instigator*/) ;
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virtual void OnAnnouncerChangingView(ChangeAnnouncer * /* instigator */, MessageDBView * /* view */) ;
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};
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#endif
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